建立工程，成功创建两个虚拟串口

source/OpenAMP/libmetal/lib/processor/microblaze/cpu.h

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+/*
+ * Copyright (c) 2017, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * @file	cpu.h
+ * @brief	CPU specific primatives on microblaze platform.
+ */
+
+#ifndef __METAL_MICROBLAZE__H__
+#define __METAL_MICROBLAZE__H__
+
+#include <stdint.h>
+#include <metal/atomic.h>
+
+#define metal_cpu_yield()
+
+#endif /* __METAL_MICROBLAZE__H__ */